baber/WOPTO huggingface dataset:
Patent GB-1274136-A (GB)
Title: Frequency conversion of a non-coherent radiation with a non-coherent pump
IPC: G02F1/35
Filed: 1970-08-19
Abstract: 1,274,136. Parametric optical devices; television. ITEK CORP. 19 Aug., 1970 [27 Aug., 1969], No. 40002/70. Headings H3B and H4F. An optical parametric frequency-converter comprises a non-linear crystal in which non- coherent signal and pump radiations are mixed, the frequency-converted output .being transmitted to a detector. In Fig. 2 a non-coherent signal image 30-is applied to a KDP non-linear crystal 38 by way of a filter 32, a collimating lens 34 and a mirror 36, while non-coherent pumping radiation from a zenon lamp 40 is applied to the crystal through a filter 42 and lens 43. The sum and difference outputs from the crystal are separated by a filter 44 so that the sum output pass-through a lens 46 and an image intensifier 50 to an eyepiece. In an alternative embodiment, Fig. 3, a proustite non-linear crystal 66 pumped by a zenon lamp 68 receives a non- coherent signal image 60 in the far infra-red, and transmits a visible output through a filter 74, lens 76 and an image intensifier 78 to a vidicon camera 80. The output frequencies may be changed by the use of a variable frequency filter 70 in the pump radiation path. The crystal may alternatively be lithium niobate, cinnabar, barium sodium niobate, tellurium, gallium arsenide or indium arsenide.
Patent GB-1362831-A (GB)
Title: Photographic camera
IPC: G03B7/081
Filed: 1971-08-26
Abstract: 1362831 Camera exposure control circuits EASTMAN KODAK CO 26 Aug 1971 [27 Aug 1970] 40113/71 Heading G1A A photographic camera has an exposure control circuit powered by an electric generator 72 which generates an electric pulse upon actuation of a shutter actuating member 28, wherein, when the intensity of scene light is above a predetermined level, a shutter 14, 16 operates at a fixed speed and the exposure control circuit controls the setting of diaphragm means 10 to adjust the effective aperture of an objective lens 12 as a function of scene light intensity, and, when the intensity of the scene light is below the predetermined level, the diaphragm means is mechanically adjusted to maximum opening and the exposure control circuit controls the shutter speed as a function of scene light intensity. The diaphragm means consists of a disc 10 rotatable about an axis 18 and has tapered slots 34, 36 which co-operate with the objective lens 12 and a photo-sensitive element 38 respectively. The shutter consists of an impacted blade 14 which swings to-and-fro when struck by a spring urged member 66 and a closing blade 16 which moves to an aperture closing position when an electromagnet 46, 48 is energized to repel a permanent magnet 50 attached to blade 16. Shutter release 28 is pivotted at 30 and when actuated an arm 26 integral therewith allows the diaphragm plate to rotate and at the same time at projection 90 thereon frees the spring driven generator 72 so that the exposure control circuit is energized. At high levels of scene illumination, a stage will be reached when the light incident upon the photo-sensitive element 38 is sufficient to allow energization of the electromagnet 46 and to result in release of the closing shutter blade 16. A pin 42 thereon engages a tooth of the series of teeth 40 disposed on the periphery of the diaphragm plate. Subsequently shutter drive member 66 is released to cause shutter blade 14 to open and close exposure aperture 12 at a predetermined exposure time. At low levels of scene illumination, the diaphragm plate rotates to its full extent until a projection 39 engages a fixed pin 41. A flag 112 is at this position visible in viewfinder 114. Also a detent 56 associated with switch contacts a, b, c is out of contact with cam 58 and the switch S 1  allow the photo-sensitive element to form part of an RC integrating circuit. The opening shutter blade 14 initiates a timing operation by operation of changeover switch S 2  and is held in an aperture open position by engagement between a blade detent 68 and a latch member 116. At the end of the exposure period, the closing blade 16 recovers the exposure aperture.
Patent GB-1509900-A (GB)
Title: Driving of rail clips in assembling a railway rail-and-fastening assembly
IPC: E01B29/24
Filed: 1974-09-16
Abstract: 1509900 Driving rail clips PANDROL Ltd 5 Sept 1975 [16 Sept 1974] 40273/74 Heading E1G (A method of assembling a railway track fastening comprises driving clips 5 parallel to the rail so that a first part enters a passage in upward projections 3 on each side of the rail 2, a second part of the clip 5 bears on the rail flange, and a third part 26 of the clip 5 bears on a fixed unyielding surface which is on the opposite side of the first part to the rail, the clips 5 being driven by power operated means mounted on a wheeled apparatus 11). The apparatus for driving the rail clips 5 into the anchoring members 3 on sleepers I comprises a wheeled carriage 11 fitted with hydraulically operated pliers 18, 24. A spigot 25 enters the passage in the member 3, or alternatively the shoe 24 may have a stepped edge, Fig. 2a (not shown), to prevent overdriving of the clips. The carriage member 31 to which the pliers are welded is pivotable about its longitudinal axis by a handle 6 to enable the pliers 18, 24 to clear the rail fastenings when the apparatus is moved along the track. The operating height of the pliers may be adjusted by screws 30, and the device may be used on the other side of the rail 2 by disconnecting the cross bars 8 and turning the carriage around. Alternatively pliers may be provided on both sides of the carriage. In a modification, Figs. 3 and 4 (not shown) one end of the pliers engages the sleeper, and the two arms are independently operated by two hydraulic cylinders to enable the ends to be raised clear of the rail fasteners when the carriage is moved. In a further modification, Figs. 5 to 7 (not shown), the rail may be gripped by hydraulically operated levers on each side of the rail, in which case only one lever arm is required to drive the clip. The cross bars 8 may include electrically insulating material so that the two rails remain electrically isolated and can still be used to transmit signalling pulses.
Patent GB-1308087-A (GB)
Title: Regulating valve for magnetic materials
IPC: F16K31/08
Filed: 1971-09-01
Abstract: 1308087 Controlling flow from hoppers WHEELABRATOR CORP 1 Sept 1971 [3 Sept 1970] 40752/71 Heading B8S [Also in Divisions B3 and H1] A valve for controlling the flow of particulate material, a substantial portion of which is magnetic, such as a mixture of steel shot and sand, to a centrifugal wheel of a machine for cleaning metal surfaces comprises a passage 50 in which is mounted an assembly of a permanent magnet 46 and a coil 48 to control flow of the material through a space 64, 66 between the interior wall 62 of the passage and the assembly, the spacing between the wall and the assembly being non- uniform. The valve has inlet and outlet sections 16, 18 which are joined to a cylindrical section 17 defining the passage 50. The sections 16, 18 are connected by wings 30, 38 to conical cap members 32, 36. Polepieces 40, 42 are secured to the members and permanent magnets 46 are stacked between the pieces and surrounded by the coil 48 which has leads 60 passing through passages in the wings 30. The axis of the assembly is offset from the axis of the cylindrical section 17 so that the spacing therebetween varies from a minimum 66 to a maximum 64. Energization of the coil by a D.C. voltage offsets the effect of the permanent magnets to permit flow of the material through the passage 50. As the voltage is reduced, the magnets act on the magnetic particles to reduce the flow through the passage in proportion to the reduction in voltage. In another embodiment, the assembly (72, Fig. 6, not shown) is coaxial with the passage but has a non-circular cross-section or has the polepieces in an off-centre position.
Patent GB-1355564-A (GB)
Title: Catalyst for the preparation of polyolefins and process for its manufacture
IPC: C08F4/58
Filed: 1971-09-02
Abstract: 1355564 Olefin polymerization catalyst FARBWERKE HOECHST AG 2 Sept 1971 [2 Sept 1970] 40991/71 Heading C3P An olefin polymerization catalyst comprises (A) the hydrocarbon-insoluble reaction product of a halogen-free titanium (IV) alkoxide and a silicon tetrahalide with a halogen-free hydroxylcontaining compound of magnesium, and (B) an organometallic compound of a metal of Groups IA, IIA or IIIB. An alkoxide of aluminium or silicon may also be present during the preparation of component (A). 'Component (A) may be treated with an organometallic compound prior to polymerization, washed, and then activated with a furtheramount of an organometallic compound when needed. Suitable support materials include (MgOH) 2 , the basic carbonate prepared from a soluble magnesium salt and an alkali metal carbonate, the basic sulphate obtained by drying a MgO-MgSO 4  cement, and compounds obtained by reacting MgO with less than an equivalent amount of water or an acid, e.g. phosphoric acid or acetic acid. Examples describe the liquid- or gas-phase polymerization of ethylene and/or propylene using (A) the reaction product of Ti(O-Pi-i) 4 , Ti(O-Bu-i) 4  or and SiCl 4  with a suitable support, in some cases in the presence of Al(O-Pr-i) 3  or Si(O-Pr-i) 4  and (B) AlEt 3  or aluminium isoprenyl. The use of MgSO 4  or MgCO 3  as the support and of BCl 3 , PCl 3  or SnCl 4  instead of SiCl 4  is also described for comparison.
Patent GB-1158335-A (GB)
Title: Explosive Composition
IPC: C06B47/14
Filed: 1966-09-14
Abstract: 1,158,335. Explosive compositions. INTERMOUNTAIN RESEARCH & ENG. CO. Inc. 14 Sept., 1966 [20 Sept., 1965], No. 41113/66. Heading C1D. An aqueous slurry or gel type explosive composition is made by dissolving a thickening agent in an aqueous solution of an inorganic oxidizer and then blending particulate sensitizer material into the liquid to form numerous tiny gas bubbles or voids which are incorporated in the final composition. The oxidizer may be ammonium or an alkali metal nitrate, chlorate, or perchlorate, or mixtures thereof. The sensitizer may be aluminium in the form of coated or uncoated ground foil, fine dense powder, ground 90% Al alloy, or paint-grade Al. Other suitable sensitizers are gilsonite, coal, starch, or a combination of sulphur and sodium nitrate. Suitable thickening agents are guar gum and tapioca flour. The thickener in solution in ethylene glycol is mixed with the aqueous solution of the oxidizer and then the sensitizer and other dry ingredients added; as compared with known compositions, less particulate Al is needed as sensitizer, and the solids added do not settle out so readily. The voids or bubbles in the composition serve to lower the density and also act as reaction centres to assist in propagation. More thickener may be added before pumping the explosives into a borehole.
Patent GB-947879-A (GB)
Title: Time contactor for the control of alarms, or alarms and broadcast receivers, by an electric clock
IPC: G04C21/20
Filed: 1960-11-30
Abstract: 947,879. Clocks. P. J. CARPENTER. Nov. 30, 1960, No.41223/60. Heading G3T. [Also in Divisions H2 and H3] A time contactor suitable for controlling the starting and stopping of a radio receiver comprises an electric alarm clock provided with a mechanism bringing about the closing of two contacts which respectively may control the switching on of the electric alarm and the receiver, the alarm ceasing after a short time. The alarm and receiver may be switched on for different lengths of time. In Fig. 1 the wheel 1 is driven by the electric clock and on the same shaft is a wheel 3 which can slide axially. The setting of wheel 3 is adjustable to the desired starting time. At this time a bevelled lug 6 integral with wheel 3 falls into a notch 4 in wheel 1 and causes cranked lever 9 to operate contact 11 connected in the receiver circuit. Lever 9 moving to the right allows cranked lever 16 Fig. 2 to engage a partially toothed wheel 18 with a driven toothed wheel 23 and cam 24 integral with wheel 18 to close contact 25, via cam follower 28 and blade 26. After about 20 seconds, a notch 27 in the cam 24 allows the opening of contact 25 and the stoppage of wheel 18 when teeth 19 are out of engagement with wheel 23. This terminates the operation of the alarm. If however the switch 13 is in the R position the receiver continues to be energized for about 45 minutes whereupon the rising of the lug 6 (Fig. 1) from the notch 4 causes contact 11 to be opened and the receiver to be switched off. In Fig. 3 (not shown) the contact 25 is replaced by a single flexible blade and the cam includes a conductive portion which complete the switching circuit.
Patent GB-1354049-A (GB)
Title: Refractory masonry wall bounding a space which receives hot gas
IPC: F23M5/02
Filed: 1972-09-06
Abstract: 1354049 Regenerative hot-blast stoves HOOGOVENS IJMUIDEN BV 6 Sept 1972 [7 Sept 1971] 41294/72 Heading F4K In an apparatus such as a hot blast stove, a layer 14 of refractory masonry forming part of a wall bounding a hot gas space and pierced by a hot gas duct 4, has a ring 6 of bricks 11 surrounding the gas duct at its entry into the space, there being a joint 9 provided which permits relative sliding between the layer 14 (including the ring 6) and outwardly adjacent refractory masonry 15 of the wall. As shown, relative sliding is also permitted (by a joint 10) between the layer 15 and a further layer 8 of the wall, and the layer 15 includes a ring 7 of bricks 12 around the gas duet 4. Said duct includes a ring of refractory bricks 13 which does not extend to the end 3 of the duct thereby allowing room for expansion of these bricks. The layer 8 is an insulating layer (e.g. of fireclay bricks) in contact with the steel outer jacket 1, 2 of the structure. Adjacent bricks in the rings 6, 7 have interlocking means at their abutting surfaces (see Figs. 3 and 4).
Patent GB-1088056-A (GB)
Title: Combustion resistant phenolic foams
IPC: C08J9/00
Filed: 1964-10-09
Abstract: Liquid phenol-aldehyde (preferably phenol-formaldehyde) resole resins are cured and foamed by the addition of at least 5 and preferably not more than 20 parts by weight of AlCl3 or AlBr3 per hundred parts of resin, preferred concentrations being such as to cause self curing of the mixture, though heat may also be used.  Foaming may be assisted by the addition of e.g. 2-50% by weight of the resole of organic foaming agents having boiling points of about -40-200 DEG  F., care being taken to avoid reducing the viscosity of the mixture below 200 centipoises. Preferred blowing agents are the halogenated fluorohydrocarbons of copending Specificatio 1,087,056.  Mixtures of blowing agents may be used.  The usual surface-active agents may be included and other possible additives include the glycidyl ethers of polyhydric phenols, and polyols and polyisocyanates.
Patent GB-1157832-A (GB)
Title: Textile and Rubber Bonding
IPC: C08L21/00
Filed: 1966-09-16
Abstract: 1,157,832. Rubber-textile bonding compositions. FARBENFABRIKEN BAYER A.G. 16 Sept., 1966 [18 Sept., 1965; 26 April, 1966], No. 41528/66. Headings C3P and C3Q. [Also in Division D1] A composition comprises natural or synthetic rubber, tetramethylol-acetylene-diurea or an ester or ether thereof, and 1,5-naphthalene diol or a meta-disubstituted benzene whose substituents are OH, NH 2 , or esterified or etherified OH groups, or a condensate of the benzene compounds with ketones or aldehydes. The compositions are adhered to textile materials by vulcanization.
Patent GB-1504426-A (GB)
Title: Clavulanic acid derivatives
IPC: C07D503/00
Filed: 1975-10-13
Abstract: 1504426 Clavulanic acid derivatives BEECHAM GROUP Ltd 1 Oct 1976 [13 Oct 1975] 41889/75 Heading C2C Novel clavulanic acid derivatives of the general Formula II wherein -CO 2 R is esterified carboxy, are prepared by oxidizing a clavulanic acid ester of the general formula Pharmaceutical compositions having #- lactamase inhibitory activity comprise, as active ingredient, a clavulanic acid derivative (II), together with a pharmaceutically acceptable carrier. They may also include a penicillin or cephalosporin.
Patent GB-1127091-A (GB)
Title: Apparatus for testing the fuel pumps of compression ignition engines
Inventor: EMERSON REGINALD STANLEY
IPC: F02M65/00
Filed: 1964-10-14
Abstract: 1,127,091. Testing fuel inject ion pumps. LESLIE HARTRIDGE Ltd. Jan. 14, 1966 [Oct. 14, 1964], No.41914/64. Heading F1A. In fuel pump testing apparatus a calibration head 12 is pivotally mounted on a head portion 14 and the fuel injection nozzles 10 are mounted on an arm 28 swivelling about a mounting 30 centrally disposed on the pump bed. The nozzles 10 are mounted on a support 32 rotatable mounted at 34 on the arm 28.
Patent GB-1326077-A (GB)
Title: Method for fabricating an electroluminescent semiconductor diode
IPC: C30B19/10
Filed: 1970-09-03
Abstract: 1326077 Controlling melt crystallization INTERNATIONAL BUSINESS MACHINES CORP 3 Sept 1970 [23 Sept 1969] 42099/70 Heading B1S [Also in Divisions C4 and H1] A body containing at least two different layers of which one is a PN junction and consisting of a mixture of gallium and aluminium arsenides the proportions of which vary across its thickness is grown by crystal pulling from a melt of gallium, aluminium and arsenic using a gallium arsenide seed in the apparatus shown in Figs. 4 and 4A which has provision for vertical and rotational movement of the seed. The crucible 84 containing the melt has a cover provided with an annular chamber containing a gallium-aluminium alloy which acts as an oxygen getter. Pellets of dopant impurity and of component metals of the melt are located in peripheral openings in a disc 98 and may be fed to the melt by rotating the disc to bring the openings into registry with bore 104 in the seed holder. Initially with a constant melt the temperature is progressively reduced to increase the gallium content and hence lower the band gap of the material. At the next stage aluminium and zinc are added and the temperature lowered so as to give constant composition material and a transition to plype conductivity and finally aluminium is added at intervals with the temperature steady or decreasing to gradually increase the aluminium content of the grown material. Variations in the process to give other compositional variations are described in detail.
Patent GB-900046-A (GB)
Title: Heater working machine and method
IPC: H01J9/10
Filed: 1958-12-30
Abstract: 900,046. Making heaters for vacuum tubes. SYLVANIA ELECTRIC PRODUCTS Inc. Dec. 30, 1958 [Dec. 30, 1957], No. 42112/58. Class 39 (2). [Also in Group XXIII] A machine for processing heaters for vacuum tubes comprises a turret rotating intermittently in a clearance position relative to processing means at a plurality of work stations, the turret being adapted to move perpendicularly to the axis of rotation in at least one of the work stations and the processing means being movable towards and away from the turret in at least one other work-station. The machine shown has eight stations, at the first of which the heater is pushed up, at the third the insulation is stripped from the ends and at the seventh the heater is bundled for transfer, the remaining stations being idle. The turret head 66, Fig. 2, is supported by a carrier 62 which can be shifted laterally on supports 70 to bring gripping jaws 42, 44 into position to engage a heater carried by a collapsible mandrel 40. The head is moved laterally by a cam follower 96 engaging in a track 88a on a cam 88 driven from the main driving-shaft 84 through gears 104, 106. Indexing is effected by a cam 90 having a track 90a engaged by a pair of cam followers 102. The wires H, Fig. 19A, constituting the heater, are wound by known means on a mandrel 40 comprising jaws 40a, 40b which are normally spread apart but can be closed to allow the wires to be picked up by the jaws 42, 44. The jaws are carried by a transfer head 32 and are operated by a reciprocating shaft 136 actuated by a lift-plate 348 which is raised by a rack 346 driven by a gear 344. The gear is actuated at the appropriate time by bell-crank levers moved by cam-plates on a driven shaft. The shaft 136, Fig. 6, carries a wedge-shaped head 150 engaging rollers 146, 148 on pivoted yokes 142, 144 fixed to shafts 114, 116 carrying the jaws. Upward movement of the shaft 136 opens the jaws 42, 44 while downward movement first grips the wires H and then compresses them into a flat bundle. The insulation stripping device comprises a pair of abrading tools 46, 48, Fig. 9, carried in slideways on mounting blocks 174, 176, spring-biased towards one another and moved apart by a cam-operated spreader 150 engaging rollers 174c, 176c on the blocks. When the wires H arrive at the work-station, the tools 46, 48 are brought into engagement with them by cam action and are then reciprocated by rollers 46b, 48b spring-biased into contact with an arm 224 carried by an eccentricallydriven pin 222. At the last station, a pair of jaws 50, 52 (Fig. 14) carried by arms 252b, 254b, which urge the jaws together under spring action, are brought into operative position to pick up the wires H from the jaws 42, 44. The arms 252b, 254b are carried by a housing 244 mounted to pivot on a pillar 242, disc control cams 292, 294, Fig. 2, swinging the arms 252b, 254b into and out of operative position and opening and closing the jaws 50, 52.
Patent GB-1124696-A (GB)
IPC: C09K3/00
Filed: 1966-09-22
Abstract: Compounds of the formula <FORM:1124696/C3/1> wherein x, y and z are integers such that the sum x+y+z+3 is at least 12, or an ester of such a compound with an aliphatic or aromatic carboxylic acid, may be obtained by heating propylene oxide and triisopropanolamine under pressure in the presence of an alkaline catalyst and optionally a diluent.  In examples, aminotriols of the above formula are prepared by reacting 9 to 37 mols. of propylene oxide with 1 mol. of triisopropanolamine and acetates are obtained from the resulting products by treatment with acetic anhydride.  The compounds are useful as hydraulic fluids, alone or in combination with conventional fluid additives, e.g. dodecylbenzene and monoethoxydipropanol.ALSO:An hydraulic fluid comprises at least one compound of the formula <FORM:1124696/C4-C5/1> wherein x, y and z are intergers such that the sum x+y+z+3 is at least 12, or an ester of such a compound with an aliphatic or aromatic carboxylic acid, in admixture with at least one known hydraulic fluid.  The invention also includes an hydraulic system in which the hydraulic fluid comprises at least one compound or ester thereof as defined above.  Conventional hydraulic fluids with which the above compounds may be used in combination are, for example, polyalkylene glycols, alkyl polyols, mono- or polyethers of glycols or other polyols, oligomers or low polymers of olefines, polyphenyl ethers, alkyl benzenes and 250-400 DEG  C. distillation cuts from petroleum.  The hydraulic fluid generally comprises 10-90% by wt. of the above aminotriols or esters thereof and conventional additives, e.g. corrosion inhibitors, anti-oxidants, anti-wear agents, may also be present.ALSO:Compounds of the formula <FORM:1124696/C2/1> wherein x, y and z are integers such that the sum x + y + z + 3 is at least 12, or an ester of such a compound with an aliphatic or aromatic carboxylic acid, may be obtained by heating propylene oxide and triisopropanolamine under pressure in the presence of an alkaline catalyst and optionally a diluent.  In examples, aminotriols of the above formula are prepared by reacting 9-37 mols. of propylene oxide with 1 mol. of triisopropanolamine and acetates are obtained from the resulting products by treatment with acetic anhydride.